hansen



A. L. HANSEN.

CETYLENE LAMP.

APPLICATION man AuG.a1. |918.

1,303,658. l Patented May 13, 1919'.

UNITED STATES PATENT OFETCE.

AUGIE L. HANSEN, or cIiIcAGn] ILLINoIs, AssIGNon To Jusrnirn ivIANUrAcrURINe COMPANY, or cIIIcAeo',` ILLINOIS, A conroaArIoN or ILLINOIS.

AcnrYLnNnIlAivIr.

Specification of Letters Patent.

Patented May 13, 1919.

Application filed. `August '31, 1918. Serial No. 252,148.

To (/,ZZ whom it may concern: i

Be it known that l, AUGIEL. HANSEN, a citizen of the United Statesjresiding at Chicago, in the county of Coeli" and State of Illinois, have linvented certain new and `useul Improvements in Acetylene-La1nps,

of which the following is a description, ref erence being had to the accompanying drawings, forming part of-thisspecification. g

My invention 'relates more particularly to acetylene lamps of lthe small portable type,

land especially to those adapted `for :use as the tubular casing and water tube; Fig. 2

a middle vertical section through the complete lamp axially of the burner and water reservoir; Fig. 3 a side elevation of the tubular casing and inclosed tube; Fig. a a side elevation of the casing alone; Fig. 5 a similar view with the casing turned ninety degrees; and Fig. 6 a side elevation of the water tube and rod removed from the casing.

The samev letters of reference are employed to 4represent corresponding parts in the several views.

The miners cap lamp in which I have shown my invention in the accompanying drawings of` a `familiar forml and comprises, primarily, a carbid chamber A and a superimposed water reservoir B, with provision for permittingthe water `to flow in regulated quantities from the water reser- Voir into the carbid chamber, the gas generated in the latter being burned at -the burner tip C. `li/Iy present invention consiste in a novel construction and arrangement of parts for regulating and controlling the flow of water from thewater `reservoir to the carbid chamber, and for stirring or opening up the slaked carbid in the latter, when necessary or desired, to permit a freer flow of water. be explained. y

Secured in the `top of the 'Water reservoir These provisionsy will now B, being soldered therein, is the upper end ot a tubular easing D which extends vertically downward through the reservoir, and through the bottom wall of the latter, to which it is also soldered to forma tightI joint, and projects downward into the carbid chamber to a point a short distance above its bottom. v i

ln the particular `form of lamp in which I have illustrated mypinventio'n in the accompanying drawings, the carbid "chamber A is detachably secured to the water reser- `voir by ascrewconnection, `for which purpose the upper end of the carbid chamber is contracted intoV a reduced portion or neck a provided with coarse screw .threads adapted to engage corresponding threads formed in a socket ZJ secured in thev bottom of the reservoir B.- IA rubbergasleta surround ing the neck a of the carbid chamber and resting upon the annular shoulder formed by the contraction of the latter, and confined between said shoulder and theiaring flange of the lower end of the screw-socket of the water reservoir, eifects a gasetight joint between the carbid `chamber and water reservoir.

The screw-threaded socket ZJ is secured in the bottom of the water reservoir by soldering and projects upwardlyV therein a short distance above its bottom. The top of the socket is of @ricavo-convex form, with its conve. surface presented downward The tube D extends centrally through this socket, while also secured therein is the lower end oit a curved gas-pipe c whose upper and laterally extending end is secured to the center of the reflector-ofthe lamp and communicates with the burnertip C.

Surrounding the tubeD, `beneath the con- Vex under .surface of the top of" the screwsocket b, and snugly iitting the latter, is the usual felt straining pad d, through which the gas generated in the carbid chamber is obliged to; pass on its way to the pipe c and burnertip C. The pad (Z is held in place by a felt-holder E, which `is slipped over the tube D from its lower end and pressed up against the pad, and which is `so formed as to engage thetubel) with sufficient friction to cause it to yieldingly maintain its posif tion when pressed upward against the pad (l, to hold the latter inplace. l

The foregoing provisions relating to the serewbonnection between the carbid cha'xm iro ber and water reservoir, the felt pad and holder, and the gas-pipe communicating with the burner tip, are of a form common in the type of lamp in which I have illustrated my invention in the accompanying drawings.

A short distance above the point at which it passes through 'the bottom of the water reservoir (i. e. through the center of the top of the screw-socket b which forms the bottom of the reservoir at that point,) the tube D is provided with one or more holes e, Figs. 3, a and 5, while the portion of the tube immediately beneath said holes is in' ternally threaded, at 7. Beneath this threaded portion the tube has its opposite sides cut away, to form extended vertical openings g, leaving narrow depending arms or strips it at its opposite sides, between said openings, which are joined at their lower ends to the bottom of the tube. The latter is substantially closed, and is shaped to receive and hold a conical valve-seat F, which in the present instance is shown as consisting of a double cone, the upper half of which forms the valve-seat and the lower half of which fits in a correspondingly shaped seat formed for it in the bottom of the tube D, to which seat it is soldered or otherwise secured. f

Fitting within yand extending lengthwise through the tube D is a lrod G, whose upper portion, z', above the holes e in the tube D, is preferably of a size to snugly fit the in terior of the. tube. Below the portion z', and opposite the openings e in the tube D, the rod Gr is reduced in diameter, at j, Fig. 6, and below this reduced portion the rod is externally threaded for a considerable portion of its length, at 7c, this threaded portion of therod coperating with the internal threads f of the tube D below the holes e in the latter, Fig. 2. The rod G is centrally bored from its lower end upward to a point above the threads le, and this central bore Z of the -rod communicates at its upper end, by o-ne or more radial openings fm, with the annular space formed by the externally reduced portion y' of the rod, and through the openings c in the tube D with the interior of the water-reservoir.

The lower end of the rod Gr, around the central bore therein,'is suitably shaped to snugly fit and coperate as a valve with the conical valve-seat F supported by the lower end of the tube D. The central bore Z in the lower half or portion of the rod Gr constitutes a water-tube of that portion of the rod, while the entire rod constitutes a valve-stem for the valve formed in its lower end. For the ypurpose of turning the rod to different positions, to correspondingly raise and lower its lower end, and ena-ble the latter to c0- operate as a valve with the valve-seat F, the upper end of the rodG, is extended slightly above the upper end of if its inclosing tube D and thegtop of the water reservoir, and has secured to it an operating arm or lever H, having a reversely bent outer end adapted to cooperate as a spring-detent with a semi-circular series of notches and projections n formed upon the upper surface of the water reservoir, by means of which the rod may be turned to different positions and be yieldingly held therein.

The water reservoir is filled through an H until its lower end is seated tightly against the valve-seat F carried by the lower end of the tube D, the flow of water from the water reservoir to the carbid chamber is cui: oli?. By turning the rod forward from this position the valve may be gradually opened to any extent desired, and the iow of water be regulated and controlled as required. In the position of the parts shown in Figs. 1, 2 and 3, with the operating handle or lever H parallel with the axis of the water reservoir and burner tip, the valve is opened about halfway between closed and full-open position.

rl-he cutaway portions g of the opposite sides of the lower ends of the tube D, which expose the lower portion of the rod G, permit the slaked carbid which forms around the lower end of the rod and tube to come in contact with the rod, and adhere more or less thereto, with the result that if the slaked carbid becomes compacted around the lower end of the rod and tube t0 such. an extent as to obstruct the flow of water through or from the open or partly opened valve a slight turning of the rod, either back and forth or in one direction only, will break the adherence of the slaked carbid to the surface of the rod and produce cracks or openings in the mass of carbid surrounding the lower end of the rod and tube, and thereby permit a freer flow of water to be resumed.

The size, shape and number of the openings in the lower end of the tube D is not material to the accomplishment of the purpose above described, but I have found the long vertical openings g in the opposite sides of the tube to be efficient and desirable, since they afford ample exposure of the rod to the surrounding carbid, and at the same time the narrow depending portions /t of the walls of the tube, between said openings, aord a suitable and firm support for the valve-seat F with which the lower end of the rod cooperates, and serve to hold the rod and valve-seat in such relation to each other that the lower end of the rod will always accurately engage the valve-scat. Inasmuch, however, as the principal function which the narrow depending portions h of the walls of the tube perform in this respect is to afford a support for the valve-seat F beneath and in axial line with the lower end of the rod Gr, any other suitable form of support for the Valve-seat, performing the same function, may be employed without departing from the broader scope of my invention.

It will be of course understood that no water can pass from `the water reservoir to the carbid chamber except through the radial holes m and connecting central bore Z of the rod G, so that when the lower end of the rod is yseated upon the valve-seat F the iiow of water from the water reservoir to the carbid chamber is entirely cut off. The threaded engagement of the portion 7c of the rod G, beneath the openings 'la therein, with the internally threaded portion fof the tube D prevents any downward passage of water externally of the rod G, between it and the surrounding tube D, while the snug it of the upper half or portion of the rod G in the c surrounding portion of thetube D, above the holes c in the latter, prevents any waiter from passing upward around the rod Gr and escaping from the top of the tube D.

It is manifest that the relative positions of the smooth and threaded portions i and ,7c of the rod G, and likewise of the internal smooth and threaded portions of the surrounding tube D, may be reversed, with the saine result, the threaded portions of the rod and `tube being located above the openings communicating with the interior of the water reservoir near the bottom of the latter, and the smooth portions of 'the rod and tube being located beneath the said openings. In the latter event, the smooth lower portion of the rod G would snugly fit the interior of the lower portion of the tube D, as does the upper half of the rod in the construction illustrated in the drawings, and prevent any passage of water from the water reservoir to the carbid chamber externally of the rod G, between it and the surrounding tube D.

As will be also understood, the primary function performed by the portion of the rod G above the openings communicating' with the interior of the `reservoir is merely that of a valve-stem, and while the constructi on shown, in which the tube D extends vertically through 'the water reservoirA (as well as projecting below the saine into* the carbid chamber). and in which the upperportion of the red is of such a size as to snugly fit such upper portion of the tube D, is a desirable one from both a. manufacturing andV op erating standpoint, nevertheless the function performed by the upper half of the rod G as a valve-stem might be performed by any other suitable valve-stem connected with the lower half or portion of the rod G and exn tending upward through the top of the water reservoir, and the portion of the tube D above the bottom of thewater reservoir be omitted. In this event the portion of the tube D below the water reservoir, and the portion of the rod G inclosed therein, would continue to perform the same functions, in substantially the same way,`as in the conw struction disclosed in the drawings.

Having thus fully described my invention, I claim: y

1. In an acetylene lamp, the combination,

with the carbid chamber and superimposed water reservoir, of a water tube extending from the water reservoir into the carbid chamber in contact with the carbid therein and having its lower end formed to operate as a valve, a valve-seat suitably supported beneath and in axial line with the lower end of the water tube, and means for raising and lowering the water tube to cause its lower end to coperate as a valve with said seat substantially described.

2. In an acetylenelamp, the combination, with the carbid chamber and superimposed water reservoir, of a water tube extending from the water reservoir into the carbid chamber in contact with the carbid therein and having threaded engagement with a fixed part of the lamp, to cause the turning of the water tube to raise and lower it, a

valve-seat suitably supported in the carbid chamber to cooperate withthelower end of the water tube, and means external to the lamp for turning the water tube; substan- `rtially described.

3. In an acetylene lamp, the combination, with the carbid chamber and superimposed water reservoir, of a water tube extending from the waterreservoir into the carbid chamber in contact with the carbid therein and having an externally threaded portion beneath the water reservoir, a second tube or casing surrounding the water tube beneath the water reservoir and having an internally threaded portion engaging the external threads upon the water tube, a valve-seat supportedby said external tube or casing beneath and 1n axial line with the lower end of the water tube, and means external `to the lamp for turning the water tube and causing its lower end to coperate as a valve with said valve-seat; substantially described.

4; In an acetylene lam-p, the combination, with the carbid chamber and superimposed water reservoir, of `a water tube extending from the water reservoir into the carbid chamber and having an externally threaded portion beneath the water reservoir, a second tube; or casing surrounding thewater valvetube beneath the water reservoir and. provided with an internally threaded portion engaging the external threads on the water tube, and provided below such threaded prtion with one or more openings to expose the lower portion of the water tube to the carrounding tube,

bid in the carbid chamber, a valve seat supported by said external tube below the openings therein and beneath and in axial line with the lower end of the water tube, and means external to the lamp for turning the water tube and causing its lower end to cooperate as a valve with said valve-seat; substantially described.

5. In an acetylene lamp, the combination, with the carbid chamber and superimposed water reservoir, of a water tube extending from the water reservoir into the carbid cha-mber and having an externally threaded portion beneath the water reservoir, a second tube or casing surrounding the water tube beneath the water reservoir and provided with an internally threaded portion engaging the external threads on the water tube, and having the opposite sides of its lower portion cut away to form extended vertical openings therein for the exposure of the lower portion of the water tube to the carbid in the carbid chamber, a valveseat supported by said external tube below the vopening therein and beneath and in axial line with the lower end of the water tube, and means external to the lamp for turning the water tube and causing its lower end to coperate as a valve with said valveseat; substantially described.

6. In an acetylene lamp, the combination, with the carbid chamber and superimposed water reservoir, of a tube or casing secured at its upper end in the top of the water reservoir and. extending downward through the bottom thereof and projecting into the carbid chamber, said tube being internally threaded for a portion of its length and provided with one or more openings communieating with the interior o-f the water reservoir near the bottom of the latter, a rod extending lengthwise through said tube and exposed to the carbid in the carbid chamber and having an externally threaded portion engaging the internal threads of the sursaid rod being also provided with a central bore extending upward from its lower end to a point coincident with the openings in the surrounding tube and there communicating, through said openings, with the interior of the water reservoir, a valveseat suitably supported in the carbid chamber beneath and in axial line with the lower end of said rod, kand means external to the lamip for turning the rod and causing its lower end to coperate as a valve with said valve seat; substantially described.

In an acetylene lamp, the combination, Ywith lthe carbid chamber and superimposed water reservoir, of a tube or casing secured at its upper end in the top of the water reservoir and extending downwardly through the bottom thereof and projecting into the carbid chamber, said tube being internally threaded for a portion of its length and provided with one or more openings communicating with the interior of the water reservoir near the bottom of the latter, and also provided with one or more openings in its lower portion to expose its interior to the carbid chamber, a valve-seat carried by the lower end of said tube below the openings therein, a rod extending lengthwise throu h said tube and exposed to the carbid in t e carbid chamber and having an externally threaded portion engaging the internally threaded portion of the surrounding tube, said rod being also provided with a central bore extending upward from its lower end and communicating at its upper end, through the openings in the surrounding tube, with the interior of the water reservoir, and means external to the lamp for turning said rod and causing its lower end to coperate as a valve with the valve seat carried by the lower end of the surrounding tube; substantially described.

8. In an acetylene lamp, the combination, with the carbid chamber and superimposed water reservoir, of a tube or casing secured at its upper end in the top of the water reservoir and extending downward through the bottom thereof and projecting into the carbid chamber, said tube being provided with one or more openings communicating with the interior of the water reservoir near the bottom of the latter, and being internally threaded below said openings, a rod extending lengthwise through said tube and snugly fitting the interior of the tube above the openings therein and having an externally threaded portion engaging the internally threaded portion of the tube beneath said openings, the lower portion of said rod being` exposed to the carbid in the carbid chamber, said rod being also provided with a central bore extending upward from its lower end and communicating at its upper end, through the openings in the surrounding tube, with the interior of the water reservoir, a valve-seat suitably supported in the carbid chamber beneath and in axial line with the said rod, and means external to the lamp for turning said rod and causing its lower end to coperate as a valve with the valve-seat in the carbid chamber; substantially described.

9. In an acetylene lamp, the combination with the carbid chamber and superimposed water reservoir, of a tube or casing secured at its upper end in the top of the water reservoir and extending downward through the bottom thereof and projecting into the carbid chamber, said tube being provided with one or more openings communicating with the interior of the water reservoir near the bottom of the latter, and being internally threaded below said openings, and being also provided with one or more openings below its internally threaded portion, a valve-seat carried by the lower end oi said tube, a rod extending lengthwise through said tube and having an upper por tion snugly fitting the interior of the tube above the upper openings therein and an externally threaded portion engaging the internally threaded portion of said tube, said rod being exposed to the carbid inthe carbid chamber through the lower openings in the surrounding tube and being provided with a central bore extending upward from its lower end and communicating at its upper end, through the openings in the surrounding tube, with the interior of the water reservoir, and means external to the lamp for turning said rod to cause its lower end to coperatr-Pl as a valve with the valve-seat carried by the lower end of the surrounding tube; substantially described.

10. In an acetylene lamp, the combination, with the carbid chamber and superimposed water reservoir, of a tube or casing secured at its upper end in the top of the water reservoir and extending downward through the bottoni thereof and projecting into the carbid chamber, said tube being pro reduced vided with one or more openings communieating with the interior of the water reservoir near the bottom of the latter, and being internally threaded below said openings, and having its opposite sides, below its internally threaded portion, cut away ,to form extended vertical openings, a valve-seat carried by the lower end of said tube below said openings, a rod extending lengthwise through said tube and having an upper portion snugly fitting the interior of the tube above the first mentioned openings therein, and a reduced portion below such upper por` tion, and an externally threaded portion below said reduced portion engaging the intern nally threaded portion of the surrounding tube, said rod being also provided with a central bore extending upward from its lower end and communicating at its upper end with the annular space formed by the ortion of the rod above its threaded portion, and further communicating, through the openings in the surrounding tube, with the interior of the water reservoir, and means external to the lamp for turning said rod to cause its lower end to coperate as a valve with the valve-seat carried by the lower end of the surrounding tube; substantially described.

AUGIE L. HANSEN. Witness: `W. J. REINKE.

Copies of this patent maybe obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

